ISO 2538:1998 pdf download – Geometrical Product Specifications (GPS) – Series of angles and slopes on prisms
1 Scope
This International Standard specifies two series of prism angles from 1 20° to 0° 30′ and a series of prism slopes from 1 :1 0 to 1 :500, for general mechanical engineering purposes.
2 Definitions
For the purposes of this International Standard, the following definitions apply.
2.1 prism
part of a piece which is limited by two intersecting planes See figure 1 .
NOTE — Both planes are termed “prism planes”. When these are intended for fits, they are termed “mating planes for the prism”.
2.2 multiple prism
part of a piece which is limited by several pairs of intersecting planes See figure 2.
NOTES
1 A double prism is limited by two pairs of intersecting planes.
2 When the intersection of each pair of planes is a point, the multiple prism is a pyramid (see figure 3).
2.3 wedge
prism with a small angle
2.4 slide prism vee-block dovetail
typical prism with a large angle
NOTE — These special prisms are used, for example, as a slideway on machine tools (see figures 4 and 5).